Stove.



W; E. SHORE.

STOVE.

APPLIOATION FILED DEC. 28, 1912. LWFfifil 5, Patented Nov. 11, 11913.

{Jim/Maw UNITED STATES PATENT ()FFICE.

WILLIAM E; SHORE, 0T TORONTO, ONTARIO, CANADA, ASSIGNOBOF FQRTY ONE-HUN-DREDTHS T0 JOHN FRANEY AND TWENTY, GNE-HIINUBEB'DHS T0 JANE O FBANEY,

0F TQRONTO, CANADA.

STOVE;

oras-1a.

Sp eeifloation of Letters I'atant.

Application filed December 28,1912. Serial No. 739, 04;5.

To-all whom it may concern Be it known that 1, WILLIAM EDWARD SHORE, asubject of the King of Great Britain, and resident of the city ofToronto, county of York, Province of Ontario, in the Dominion of Canada,have invented certain new and useful Improvements in Stoves, de-

scribed in the following specification and illustrated in theaccompanying drawings.

The principal feature of the invention consists in the novelconstruction and arrangement of an attachment for stoves wherebya supplyof air is superheated and then directed to and distributed in thecombustion chamber.

The main objects of the invention are, to effect a reduction in theconsumption of fuel, and to devise an improvement in stove or furnaceconstruction which will insure the consumption of the maximum amount ofcombustible matter thereby preventing the escape of unburnt gases fromthe fire, and obtaining the maximum heat units from the fuel consumed.

A further object 'of the present invention is to reduce the labor ofattention to'the stove or furnace to the minimum.

In the drawings, Figure 1 is a longitudt nal sectional view of a stoveshowing the application of my invention. Fig. 2 is an enlargedperspective detail of the air heating and distributing device for thetop part of the stove. Fig. 3 is an underside plan view 7 of the airheating and distributing device shown in Fig. 2, v

Like numerals of reference indicate corre sponding parts in each figure.

Referring to the drawings, 1 is the stove body having the fine box 2 inthe front thereof and the oven 3 separated fromthe outer shell by theheat chamber 4 extending over the top and around the back and beneaththe same.

Bis an air chamber arranged beneath the bottom portion of the chamber 4and extending forwardly from the back of the stove.

G is a baffle plate extending upwardly from the stove bottom 7 arrangedat the back of the ash pit 8 and spaced a short distance forward of thefront end 9 of the oven.

10' are a plurality of downwardly sloped louver plates arranged abovethe open end of the chamber 5 and extending across the width of thestove below the fire box and formlng a guard to prevent the ashes andcinders from falling into the space 11 between the battle and the frontof the oven and also to direct the flow of air from the chamber 5across, the bottom of the grate,

12 1s a suitable damper arranged in the back of the stove andcontrolling the ingross of air to the chamber '5, When lightmg the firethe damper 12 is opened so as to allow a free ingress of air through thecha n.- her 5. The air flowing inwardly fromthe back rises at the end ofthe oven and flows out between the louvers 10 and passes upwardlythrough the fire. The air supply being thus. directed across the bottomof the grate efi'ects a uniform distribution through the fire;consequently the combustion will be uniform and the fire at the back ofthe fire box adjacent to the oven will always be active. The damper 12is regulated in a simi lar manner to the ordinary front damper tocontrol the fire, The air passing throu h the chamber 5 becomes heatedvery qniclgy after the fire has started, consequently a quantity of airrich in oxygen is'supplied to the fire at a warm temperature thuscreatinlg a better condition for combustion than w vien cold air is feddirect as in the ordinary construction of stove,

13 is a casing, here shown open on the underside and adapted to restupon the t p of the oven 3, the back and front flanges 14 and 15beingpreferably of arc shape, though any other desired shape may beused.

16 is a flange formed integral with the top 17 of the casing 13 arrangedsubstantially parallel to the back flange 14 and having an opening 18through the center thereof,

19 is a flange depending from the top 17 and arranged substantially"parallel to the fl nge l 20 is a flange also of arc shape arrangedparallel to the flange 1.9 and having an opening 21 through the centerthereof.

22 are flanges extending between the outer ends of the flange 2.0 andthe back flange 14 and abutting the ends of the flange 16."

2?) are passages around the ends of the flange 19 communicating with thespaces between the flanges 16 and 19 and 20.

24: are holes arranged in the top plate 25 i Patented Nov. 11,1913.

of the oven communicating with the space between the hack flange 14 andthe flange 16 at the ends of said spaces. The front flange 15 of'thecasing is formed with a plurality of small holes 26 therethrough.

27 are bosses formed on the top of the casing 13 at the ends having theopenings 28 therethrough leading to the interior of said casing.

29 is a tubular loop having the downturned ends 30 extending into theopenings 28, said loop being adapted to extend around the ends andacross the front of the firebox at the top and having the inner sideformed with a plurality of holes 31.

The casing 13 is arranged immediately back of the fire brick lining 32of thefire box and the edges are preferably cemented to the top of theoven in any suitable manner so that the space contained will be airtight around the edges. 7

33 is an indent formed in the front wall 15 of the casing arrangedcentrally of its width and adapted to receive the center post 3a of thestove (shown in dotted lines in Fig. 2). The casing thus straddles thepost and delivers the heated air directly over the fire.

In the use of this invention, the heated air in the oven rising to thetop flows through the holes 26 into the casing 13 and seeking egressflows first through the opening 18 in the flange 16, then around theends of the flange 19 and through the opening 21 in the.

flange 20. As the casing 13 is arranged on the top of the oven the gasesof combustion rising from the fire pass over the top of said plate;consequently it becomes very hot and the hot air rising from the oven isfurther heated and flows through expansion outward through the holes inthe front side of the casing and mingling with the gases of combustioncauses the un-consumed particles thereof to ignite and to give off theheat contained therein. A portion of the air in the front portion of thechamber contained within the casing 13 flows through the openings 28 atthe endsand into the tubular loop 29 being distributed around the top ofthe fire box and directed over the surface of the fire.' A supply ofheated fresh air is thus distributed over the top of the fire in such amanner as to insure the thorough combustion of all combustible particlesof a solid and gaseous nature so that the maximum heat efliciency isobtained and. by the arrangement of the under draft there is a uniformdistribution of air beneath the grates, consequently the air will passupwardly uniformly through the.'fire effecting a uniform combustionthroughout the mass.

I am aware that many devices have been attached to stoves and furnacesin various ways to distribute fresh air in the combustion chamber abovethe fire, the air being heated more or less before being introduced butso far as I am aware it is entirely novel to introduce heated air intothe distributing device where it is subjected to the intense heat of thegases of combustion and superheated before being distributed. Thisfeature when applied to cook stoves has also another valuable function,in that the odors and vapors created in the oven are completelyconsumed, thus very materially reducing the escape of odors into thekitchen.

-The danger of escaping coal gas is also thetop to bottom, said narrowpassages forming superheating chambers for the air rising from theinterior of the oven, said casing also having a centrally arrangedindent in its front side adapted to straddle the center post of thestove and the inner walls within the casing directing the expanded airin equal volume to each. side of said indent delivering the superheatedair over the top of the fire pot in a horizontal direction to insure themixing of the superheated air. with the gases of combustion.

2. In a stove, the combination with the fire box and oven, of a casingsecured to the top of said oven and having an inlet in the bottomcommunicating with an opening in the top of the oven and also havingopenings above the level of the inlet adapted'to direct the superheatedair into said .fire box over the fire, and a tubular member leading fromthe top of said casing and extending around the top of the fire box andhaving holes therein adapted to direct the superheated air into the firebox over the fire.

Signed at the city of Toronto, county of York, Ontario, Canada, this24th day of December 1912. Y

Witnesses:

E. HERON,. A. G. KELLY WILLIAM E. SHORE.

